Cement.



c. COMPOSITIONS, STATES PATENT OFFICE.

8 4 COATING 0R PLASTIC. Egg DC} f .Junn o. snLLARs, OF BIRKENHEAD,ENGLAND. 51 9 WW M was CEMENT. n. z w

SPECIFICATION forming part of Letters Patent No, 633,618, datedSeptember 1899.

Application filed June 21,1898- Serial No. 684.089. (N0 specimens.) I

To all whom it may concern: and characteristics of such a cement is re-Be-it known that I, J OHN CARRINGTONSEL- quired.

LABS, a subject of the Queen of Great Britain, In another mode of makingthe cement the and aresident of Birkenhead, Chester county, bauxite issoaked in silicate of soda, and after 5 England, have invented certainnew and usewithdrawal the excess of silicate of soda is ful Improvementsin Cement, of which the drained off. The compound is then groundfollowing is a specification. or pounded, as before specified, and itpos- This invention has reference to the manusesses the samecharacteristics as that made facture of cement for use in connectionwith in the manner just specified.

1o apparatus or materials subjected to artificial When cement isrequired to set extra heat generated by fire or hot fluids or thequickly or under water, there is combined like; for use in the form ofpaint as a covering with it a proportion of Portland cement. For 3 ofiron and steel surfaces for their protection instance, in the case ofcement being required against corrosion, as for covering the plates foruse in the inside surface of steam-gener- 15' of various parts of shipswhich it may be deators, where it is subjected to hot water, the

sired to protect and other steel or iron work compound mayconsistof twoparts, by weight,

on land; for use in steam-generators, and for of the combined bauxiteand sil o s. c a similar and other purposes to which it may and oneart-6 or an cement ut, as be usefully applied; and the invention hasstated,the siinplm and sili- 2o chiefly for its object to providecements of cate of soda will of itself resist the action of the kindreferred to and for purposes such hot water after being artificiallyheated, but as specified at an inexpensive rate, and to does not set sorapidly as that containing thereby enable their use for purposes such asPortland cement. If this compound cement described to be considerablyextended or, at is used under water or for purposes subjected z 5anyrate,to enable them tobe used and applied to wet, the two portions ofwhich it is comat considerably less cost than heretofore. posed may bein the proport'ronof one to on,e. 7 5

According to this invention the base of the In a cement according tothis invention cement consists of the combination of bauxite in acondition most suitable as a paint for and silicate of soda andpreferably TF6? covering or painting iron or steel structures 3'0 aboutthe proportion of one part, by weight, or surfaces water is mixed andcombined of the latter to four of the former. This comwith the bauxiteand silicate of soda cement pound I find when heated artificially evenabove described, in the proportion of about at comparatively lomi'aturesoon sets three parts of water to one of cement and to and becomes hardand adheres strongly and this mixture tliere is further added qn e part3 5 does not crack, and it is, moreover, insoluble, of Portland cementto twelve of themixture 1; even in hot water. of cement and water. Theproduct is a paint According to one mode of manufacture silicapa c oeing applied by the brush. This 5 cate of soda in or about theproportion specipaint may be allowed to dry or harden of it- 5 fied isadded to bauxite in a natural state and self, which will be accomplishedin a com- 40 then it is allowed to stand for a short time. parativelyshort time; or the hardening may It is then ground orpounded to a finepowder, be hastened by the application of artificial 0 and the twosubstances become thoroughly heat as by a lamp-flame or flame-jets, ormixed and are brought to the condition of a other suitable heating meansor by heating plastic substance orputty. In this condition the metalitself.

5 it is serviceable for repairing vessels or cham- As regards theproportions herein specified,

bers subjected to artificial heat, as fire heat; these may be used withadvantage; but they 5 for making joints in such things or filling can bevaried within reasonable limits withcracks or holes or repairing same,and gen out departing from the essential charactererally where amaterial having the qualities istics of the invention.

the cement material the bauxite is soaked in o f so da in proportions,lfi'specified, substanwater, then drained and ground or pounded, tiallyas set forth.

and then the resultant material is made into In witness whereof I havehereunto set my 5 bricks, which are then air-dried and finally hand inpresence of two witnesses.

According toanother method of making up prisingin combination bauxiteand silicate IO soaked in or have added to them silicate of JOHN C.SELLARS. soda. WVitnesses: i

lVhat is claimed is I JOHN H. wALKER, A cement for the purposes asdescribed com- 1 .INO. IV. LROWN.

